diff --git a/Admin/Install/Navigation.php b/Admin/Install/Navigation.php
index 3a49cb9..e91cb7c 100644
--- a/Admin/Install/Navigation.php
+++ b/Admin/Install/Navigation.php
@@ -36,7 +36,7 @@ class Navigation
      *
      * @since  1.0.0
      */
-    public static function install(string $path = null, DatabasePool $dbPool = null) : void
+    public static function install(string $path, DatabasePool $dbPool) : void
     {
         \Modules\Navigation\Admin\Installer::installExternal($dbPool, ['path' => __DIR__ . '/Navigation.install.json']);
     }
diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index 1fa9ba2..1a22a29 100644
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -18,6 +18,7 @@ use Modules\Profile\Models\Profile;
 use Modules\Profile\Models\ProfileMapper;
 
 use phpOMS\Asset\AssetType;
+use phpOMS\Contract\RenderableInterface;
 use phpOMS\Message\RequestAbstract;
 use phpOMS\Message\ResponseAbstract;
 use phpOMS\Views\View;
@@ -54,11 +55,11 @@ final class BackendController extends Controller
      * @param ResponseAbstract $response Response
      * @param mixed            $data     Generic data
      *
-     * @return \Serializable
+     * @return RenderableInterface
      *
      * @since  1.0.0
      */
-    public function viewProfileList(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
+    public function viewProfileList(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
     {
         $view = new View($this->app, $request, $response);
 
@@ -73,11 +74,11 @@ final class BackendController extends Controller
      * @param ResponseAbstract $response Response
      * @param mixed            $data     Generic data
      *
-     * @return \Serializable
+     * @return RenderableInterface
      *
      * @since  1.0.0
      */
-    public function viewProfileSingle(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
+    public function viewProfileSingle(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
     {
         $view = new View($this->app, $request, $response);
 
@@ -121,11 +122,11 @@ final class BackendController extends Controller
      * @param ResponseAbstract $response Response
      * @param mixed            $data     Generic data
      *
-     * @return \Serializable
+     * @return RenderableInterface
      *
      * @since  1.0.0
      */
-    public function viewProfileAdminSettings(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
+    public function viewProfileAdminSettings(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
     {
         $view = new View($this->app, $request, $response);
         $view->setTemplate('/Modules/Profile/Theme/Backend/modules-settings');
@@ -139,11 +140,11 @@ final class BackendController extends Controller
      * @param ResponseAbstract $response Response
      * @param mixed            $data     Generic data
      *
-     * @return \Serializable
+     * @return RenderableInterface
      *
      * @since  1.0.0
      */
-    public function viewProfileAdminCreate(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
+    public function viewProfileAdminCreate(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
     {
         $view = new View($this->app, $request, $response);
         $view->setTemplate('/Modules/Profile/Theme/Backend/modules-create');
diff --git a/Models/ProfileMapper.php b/Models/ProfileMapper.php
index 3301107..a060ae1 100644
--- a/Models/ProfileMapper.php
+++ b/Models/ProfileMapper.php
@@ -63,11 +63,6 @@ final class ProfileMapper extends DataMapperAbstract
      *
      * @var array<string, array<string, null|string>>
      * @since 1.0.0
-     */    /**
-     * Has many relation.
-     *
-     * @var array<string, array<string, string>>
-     * @since 1.0.0
      */
     protected static $hasMany = [
         'location' => [